Larb (also laab or laap) is a Thai and Lao minced meat salad made from finely ground pork, chicken, beef, or fish mixed with toasted rice powder, fish sauce, lime juice, dried chilli flakes, shallots, mint, coriander, spring onions, and kaffir lime leaves. Unlike Thai curries, larb contains no cooking oil — the texture is loose and moist rather than oily. On carpet, the primary concerns are: finely ground meat protein that works into the pile at a smaller particle size than chunk protein; toasted rice powder starch; fish sauce trimethylamine (the dominant smell concern); lime juice citric acid (bleaching risk on dark carpet); dried chilli carotenoid (red-orange pigment); and herb chlorophyll from mint and coriander. The no-oil composition means the cornflour step is less critical than for curries, but thorough protein removal is essential.
Cleaning steps
- Remove as much of the larb as possible using a spoon or spatula. The fine particle size of minced meat means it embeds more readily than chunked protein — work from the edges inward to avoid spreading. Use a stiff dry brush to lift embedded meat particles from the pile before applying any liquid.
- Apply cold water and blot promptly to dilute the lime juice and fish sauce. Cold water prevents protein setting and quickly dilutes the citric acid before it has extended contact time with the fibres.
- Apply dish soap solution (1 teaspoon per cup of cold water) and blot to address the protein and starch residue.
- Apply enzyme cleaner and allow 20 minutes dwell time. Finely ground meat has a higher surface area than chunks, giving enzyme cleaner more contact area to work with — but the particles also embed deeper, requiring thorough rinsing to remove breakdown products.
- Rinse with cold water blotting — multiple passes, as fine meat residue rinses less cleanly than chunky protein.
- Apply hydrogen peroxide (3%) for the dried chilli carotenoid and any herb chlorophyll (mint, coriander) staining. Allow 8–10 minutes and blot.
- Apply baking soda generously overnight for the fish sauce smell. This is the most persistent concern in a larb spill — the smell is as strong as or stronger than a direct fish sauce spill because larb is dressed heavily with fish sauce relative to its volume. Apply baking soda for two consecutive nights.
Lime juice in larb is acidic — rinse with cold water first on dark carpet
Larb is dressed with fresh lime juice squeezed directly over the salad, and the acid concentration in the dressing is higher than in a Thai soup like Tom Kha Gai where lime juice is added to a large liquid volume. On dark or richly dyed carpet, prioritise the cold water rinse step over everything else to remove and dilute the citric acid before it has extended contact time. On light or neutral carpet, the order of steps matters less — proceed with blotting first, then cold water rinse.
Blood larb (laab leuat)
Traditional blood larb (laab leuat) contains raw or partially cooked animal blood mixed with the minced meat. Blood on carpet introduces haemoglobin protein which sets permanently under heat and is more resistant to standard enzyme cleaner than cooked meat protein. If the larb contains blood: apply cold water immediately (never hot), apply enzyme cleaner containing protease for 25 minutes, and blot thoroughly. Hydrogen peroxide (3%) is effective on haemoglobin staining after enzyme treatment. Do not use any warm or hot water during cleaning of blood larb. The other treatment steps (fish sauce odour, lime juice rinse, herb pigment) are the same as standard larb.
Larb left a persistent fish sauce smell or dried meat residue?
Finely ground meat protein and fish sauce that have penetrated carpet pile at depth may need professional enzyme extraction for complete removal.
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Frequently asked
The toasted rice powder in the larb has dried into a grainy powder residue in the carpet. Does toasted rice powder stain?
Toasted rice powder itself does not produce a significant colour stain — it is pale to golden in colour and does not contain chromophore pigments. Its primary concern on carpet is as a starchy binder that, when wet, creates a slightly adhesive paste that can mat carpet fibres together and attract dust. When dry, it becomes a gritty powder that is easier to vacuum out. If the rice powder has dried in the carpet, vacuum first using a brush attachment to loosen the powder. Apply a diluted dish soap solution (half the normal concentration — the starch needs emulsification rather than heavy surfactant action) and blot. If the carpet feels stiff or slightly rough in the affected area after cleaning and drying, residual toasted rice powder starch remains. Re-apply dish soap solution, allow 3 minutes, and rinse thoroughly.
The larb had a lot of mint leaves in it. Some mint leaves are matted into the carpet pile. Is mint chlorophyll a difficult stain?
Fresh mint chlorophyll staining on carpet is typically less resistant than the dried carotenoid from dried chilli in larb, because fresh chlorophyll is less concentrated and has not been thermally stabilised by cooking. Apply hydrogen peroxide (3%) to any green-stained areas, allow 8 minutes, and blot. In most cases one round is sufficient for fresh mint chlorophyll. If a faint green tinge remains after hydrogen peroxide, a second round on the specific stained fibres (applied with a cotton bud for precision) will address it. Remove any physical mint leaf fragments by hand before applying any liquid, as wet mint leaves release more chlorophyll when compressed into the pile.
I cannot get the fish sauce smell out of the carpet after two applications of baking soda. The carpet has been cleaned but the smell returns when the room is warm. What should I try next?
Fish sauce trimethylamine smell that persists after two baking soda applications and returns in warm conditions is almost certainly in the underlay, not just the carpet surface. Surface baking soda treatment cannot reach underlay-sourced odour. Before calling for professional extraction, try the following: apply white vinegar diluted 1:4 with cold water directly to the area, press it firmly into the pile with a cloth (to help it reach deeper), allow 5 minutes, blot, and allow to dry completely before applying a third round of baking soda overnight. The vinegar neutralises the alkaline trimethylamine salt compounds at a deeper level than baking soda alone. If the smell returns after this combined treatment, the underlay is the source and professional extraction is needed to address it without underlay replacement.